This is a Reedy 7.4V, 1200mAh Flat Li-Poly Receiver Battery Pack. Battery technology continues to progress and Reedy is proud to bring improved performance to the masses. This 1200mAh battery is a lightweight alternative that can improve vehicle handling by reducing the overall weight of the vehicle. It can also offer improved flexibility when it comes to left/right and front/rear weight distribution. Premium high-strength, low-resistance cells are equipped with a standard power plug that fits directly into your receiver or switch harness, while a JST-XH balance connector allows for simple balance charging.